Efficacy vs. Effectiveness

By Jaxson

Main Difference

The main difference between Efficacy and Effectiveness is that the Efficacy is a able to finish something satisfactorly and Effectiveness is a capability of producing the desired result

  • Efficacy

    Efficacy is the ability to get a job done satisfactorily. The word comes from the same roots as effectiveness, and it has often been used synonymously, although in pharmacology a distinction is now often made between efficacy and effectiveness. The word efficacy is used in pharmacology and medicine to refer both to the maximum response achievable from a pharmaceutical drug in research settings, and to the capacity for sufficient therapeutic effect or beneficial change in clinical settings.

  • Effectiveness

    Effectiveness is the capability of producing a desired result or the ability to produce desired output. When something is deemed effective, it means it has an intended or expected outcome, or produces a deep, vivid impression.

  • Efficacy (noun)

    Ability to produce a desired effect under ideal testing conditions.

  • Efficacy (noun)

    Degree of ability to produce a desired effect.

  • Effectiveness (noun)

    The property of being effective, of achieving results.

    “The effectiveness of the drug was well established.”

  • Effectiveness (noun)

    The capacity or potential for achieving results.

  • Effectiveness (noun)

    The degree to which something achieves results.

    “He questioned the effectiveness of the treatment.”

  • Efficacy (noun)

    the ability to produce a desired or intended result

    “there is little information on the efficacy of this treatment”

Oxford Dictionary

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